This provides a number of meta-class methods to the meta-class of DustyDB model objects,
i.e.,
a class that uses DustyDB::Object and does DustyDB::Record.
These methods provide lower level access to the database and should be used with caution.
This part of the API is more likely to change as well.

This saves the given record (an object that does DustyDB::Record) to the given DustyDB database. This method returns a hash referece representing a key that can be used to retrieve the object later via: